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EGT Lead Connection

in 912 / 914 Technical Questions 7 years ago
I need to replace the push-on electrical connectors at the ends of my EGT leads -- the existing connectors are just too intermittent. Can I slightly (@ 1/2 inch?) shorten these EGT leads without causing any problems? My existing EGT is: Rotax EGT Sensor, K-type P/N 100405-001 Rev K. Thanks!

  • Re: EGT Lead Connection

    by » 7 years ago

    A thermalCouple is a Current generator.
    The length of the connecting wire, within reason, is not a factor.

    Shortening it 1/2 inch is a no brainer.
    If you wanted to lengthen it more than 100 ft. or so, that would require a little thought, but not much.

    Carry on! :)

    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Clicking the "Thank You" is Always Appreciated by Everyone.

      
    Report

  • Re: EGT Lead Connection

    by » 7 years ago

    Had to shorten one EGT-cable by approx. an inch recently to get rid of a mal connection (broken wire) giving useless readings recently and it definitely made no difference (beside the desired effect that the reading got good again). Since thermocouples generate a smal voltage (not current) as a function of temp, there will be some mesurable effect when cut down in great lengths on one sensor only.
    However, since we measure in the range of 800 C it won't matter really. Plus, the displayed value is more like an indication than an absolute figure equal to "the ultimate truth". Savvy published a good article on that some time ago, in case your are interested... Mike Busch explains that better than I can.
    Regards
    Peter
      
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